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POINT SPREAD FUNCTION FOR MULTI-RECTANGULAR APERTURE | ||
| journal of al-qadisiyah for pure science(quarterly) | ||
| Article 1, Volume 7, Issue 3, 2007, Pages 243-256 PDF (0 K) | ||
| Authors | ||
| Dr. SUNDUS YASEEN HASAN; A MIBDIR HOLI; | ||
| Abstract | ||
| In this paper the point spread function (PSF) for multi-rectangular aperture with no aberration were found numerically with a Q-basic computer program and analytically by deriving suitable equations. And by comparing the two results they were shown a good coincidence which assure the trueness of the computer program. The values of PSF of the single rectangular aperture was compared with that of single square aperture previously found , and it is found that the PSF for a rectangular aperture has become wider by square root of aspect ratio value in one direction and narrower by the inverse of the square root of the aspect ratio value in the other direction. The PSF of multi-rectangular aperture were also computed when the focus error were found with a values of 0.25 and 0.5, and it found that the value 0f PSF of the peak have been decreasd by 73.6% of its original value with no aberration for the value of the focus errorw20=0.25 and by 28% of its original value for w20=0.5. | ||
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